Evaluation of Relationships Between Strength Properties of Rock Samples and Drilling Rate Index

Aslan, Efe; Köpüklü, Hakan; Durgunoglu, H. Turan

doi:10.1007/978-3-031-20172-1_41

Cited by 1 publication

(1 citation statement)

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“…In recent decades, Schmidt hammers have been used for various purposes, including determining the physical and mechanical properties of rock for evaluating the production of rock cutting machines (Goktan and Gunes, 2005;Mikaeil et al, 2021), determining joint wall strength (Bolla and Paronuzzi, 2021;Sow et al, 2016; Zadhesh and Majdi, 2022), determining discontinuities wall strength (Solak and Tuncay, 2023), determining rock quality in large samples (Briševac et al, 2023), determining drill-Copyright held(s) by author(s), publishing rights belongs to publisher, pp. 45-54, DOI: 10.17794/10.17794/rgn.2024.1.5 ing rate and penetration (Aslan et al, 2022;Ataei et al, 2015), and the Schmidt hammer can even be used to determine the geological dating age of rocks (Matthews and Winkler, 2022;Shakesby et al, 2006). Therefore, the conversion value of the Schmidt hammer rebound number determines the characteristics of various rock materials.…”

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confidence: 99%

Comparative Analysis and Evaluation of the Conversion Formula for Rebound Number of Schmidt Hammer Test and Unconfined Compressive Strength Test – Case Study: Andesite Rock Slope in Graha Puspa, Lembang Fault

Martireni,

Cakrabuana,

Hermawan

et al. 2024

MGPB

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The Unconfined Compressive Strength (UCS) test is one of the most common methods for determining the rock material strength value. However, the size and complexity of the instrument do not allow UCS testing to be carried out in the field. The UCS value can be estimated in the field by converting the rebound number using the Schmidt hammer test. This research aims to carry out a comparative analysis and evaluation of the conversion formula for rock compressive strength values resulting from the Schmidt hammer test and UCS test in a case study of andesite rock slopes at Graha Puspa, Lembang Fault, Bandung, Indonesia. Rock hardness testing was carried out using the Schmidt hammer test on five segments at Graha Puspa. UCS testing was carried out using a compressive strength machine on four samples in Graha Puspa. The test results show a rebound number value ranging from 31.67 - 45, while the UCS test results show a value range of 134.96 – 171.60 MPa. The results of the previously published empirical equations differed considerably from the results of the UCS tests on rock samples in the laboratory when estimating the UCS values. From this evaluation, this research proposed formulation development of andesite rock formulation in the Lembang Fault area. However, UCS testing on more samples is highly recommended in order to obtain a compressive strength conversion formula that is more suitable for the case study at this location.

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